Port 36424Nq and Nq′ Application Protocol (NqAP)

3GPP mobile-network signaling over SCTP for Nq and Nq′ interfaces; normally found only within operator infrastructure.

transport: sctp
in transit: cleartext
assignment: official
risk: 2/10
lookups: 0

Technical Details

what runs on :36424

The registered endpoint is NqAP on SCTP port 36424. SCTP establishes an association before application data is exchanged; the port assignment identifies Nq/Nq′ signaling, but does not by itself establish the participating network functions or the specific procedures in use. There is no reason to expect a generic TCP-style banner or an ordinary web-service handshake.

Security Information

exposure of :36424

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 2.6 across 1,995 ports — this one sits 0.6 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

sctp

every listening transport is another surface to filter at the edge

security overview

SCTP does not encrypt traffic by default, so confidentiality depends on the operator’s network protections or additional security such as IPsec. This signaling port should not be exposed to the public internet; restrict it to authorized mobile-network peers and monitor unexpected SCTP associations. Its low practical exposure reflects its specialized use, not a guarantee that an exposed endpoint is safe.

Record

iana registry entry

port: :36424
service: Nq and Nq′ Application Protocol (NqAP)
transport: SCTP
encryption: cleartext
assignment: iana registered
risk: 2/10safe
category: Network Services Mobile
usage: This is a 3GPP-assigned control-plane protocol for mobile-network infrastructure, not a general-purpose application service. Engineers are most likely to encounter it on an operator network or a lab/testbed implementing the relevant 3GPP interfaces; it is not commonly exposed on the public internet.
lookups: 0rank 993
added: 2026-10-20
updated: 2026-10-20
references: IANA service name registry — port 36424

Something wrong?

This record is maintained by the engineers who use port 36424. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-20.

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Related Ports

all 1,995 in network services →

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:3128	Tatsoft Default HTTP Proxy	TCP	Web Services	caution	46.8k

risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :36424Nq and Nq′ Application Protocol (NqAP)

Technical Details

Security Information

Related Ports

Port 36424Nq and Nq′ Application Protocol (NqAP)